Liquid-fuel vaporizer



Aug. 28, 1928. 1,682,065

M. T. BRYAN LI QUID FUEL VAPORI ZER Filed Nov. 14, 1925 atented Aug. 28, 1928.

UNITED STATES MURBICE T. BRYAN, OF REDOND'O BEACH, CALIFORNIA.

LIQUID-FUEL VAPORIZER.

Application filed November 14, 1925. Serial No. 68,976.

An object of my invention is to provide a liquid fuel vaporizer in which an auxiliary source of heat is utilized to completely vaporize the liquid fuel prior to its use.

Another object is to provide a liquid fuel vaporizer in which the boiling and vapor pressure of the liquid fuel is utilized to'forcibly eject the same from a chamber against a battle plate to further break up said fuel.

A further object is to automatically regulate the flow of liquid fuel to the vaporizing chamber, depending on the requirements for liquid fuel.

Still another object is to provide means whereby the vaporizing chamber may be bypassed by the liquid fuel as desired by the operator.

Advantages of my liquid fuel vaporizer are efficiency in operation and simplicity of construction. I

Other objects, advantages and features of invention may appear from the accompanying drawing, the subjoined detailed description and appended claims.

In the drawing illustrating my invention I have shown the preferred form thereof but it may also be embodied in other forms; and in this application I desire to cover my invention in whatever form it may be embodied.

' Fig. 1 is a longitudinal sectional view of my liquid fuel vaporizer.

Fig. 2 is a sectional view on a reduced scale on line 2-2 Fig. 1.

Fig. 3 is a sectional view on an enlarged scale on line 33 Fig. 1.

Fig. 4 is a diagrammatic side view of the heating arrangement for my liquid fuel vaporizer.

Fig. 5 is a longitudinal sectional view of a liquid fuel pressure device.

Referring more particularly to the drawin My liquid fuel vaporizer comprises a float chamber 1, in which a float 2 is positioned, which controls a liquid fuel inlet needle valve 3, in the fuel inlet 4, all of which is of usual and well known construction.

An outlet tube 5 extends from the float chamber 1, and pipes 6 and 7 extend there from. These pipes are spaced apart, and liquid fuel may be selectively directed through either, by means of a hollow bolt 8 which is threaded into tube 5.

The bolt 8 has ports 9 and 10 therein, which are adapted to be brought into registry with the pipes 6 and respectively, by screwing the bolt 8 inwardly or outwardly in the tube 5, thus causing liquid fuel to flow through either of the pipes as desired. A packing gland 11 in the end of the tube 5 prevents leakage of liquid fuel around the bolt 8.

An o1l vaporizing chamber 12 has an auxiliary source of heat applied thereto, which may be in the nature of a flame, if the liquid fuel vaporizer is used in connection with a stove, lighting plant, or the like, or when used on an internal combustion engine a jacket 13 surrounds the bottom and sides of the chamber. This jacket may be covered with an insulating material if desired. A relief valve 12' is provided in the wall of the chamber 12 to relieve an excess of pressure therein. A pipe let extends from the engine exhaust pipe 15 to the acket 13, and a pipe 16 conducts the exhaust gases from said jacket. Thus the chamber 12 is heated to a high temperature to vaporize the liquid fuel. The pipe 14 preferably extends into or adjacent the bottom of the jacket 18 for a purpose to be further described.

A liquid fuel receptacle 17 is mounted on the bottom of the chamber 12, and is preferably conical in form the lower end screwing on to a ring 18 on the floor of the chamber.

A tube 19 rises from the top of the receptacle l7, and is threaded thereon and a circular baffle plate 20 is secured adjacent the top of said tube.

A valve 21 is positioned in the receptacle 17 below the tube 19, which rests on an annular ledge 23. Holes 24 are formed in plate 22, these holes being covered by ledge 23 when the plate is resting thereon, but pressure in the receptacle 17 will cause the plate to lift, permitting liquid fuel particles and vapor to pass through the holes and out of the tube 19.

The pipe 6 extends to a control valve 25 which comprises a chamber 26 and a tubular housing 27 rising therefrom, the purpose of which will be further described.

A pipe 28 extends from the valve 25 and is threaded into the bottom of the chamber 12 and opens into the receptacle 17. A flap valve 29 is hinged to the floor of the chamber 12, and closes the opening to the pipe 28. This valve opens inwardly and prevents pressure in the receptacle 17 from traveling back into the float chamber 2 and exerting a back pressure on the incoming liquid fuel.

A sylphon 30 is formed with a hollow threaded stud 31, which screws into the cover plate 32 of the chamber 12. A lever 33 is pivoted to the top of sylphon to a bracket 34 extending from the cover 32, and to a rod 35 which extends downwardlythrough the hous ing 27 to the chamber 26. A lever 36 is pivotally mounted in the chamber 26 and the rod 35 is pivoted to the end thereof. A needle valve 37 is mounted on the lever and controls the flow of liquid fuel through the outlet pipe 28. A bracket 38 rises from the cover 32 and extends over the lever 33 and a spring 39 is adjustably interposed between the bracket and lever to control the sensitivity of the sylphou 30.

A conical baffle plate 40 depends from the cover 32 and liquid fuel particles asthey are expelled from the tube 19 strike there against and are vaporized. Any liquid drops to the plate 20 where it is directed outwardly and falls to a series of superposed baffles 41 where it is vaporized by heat from the jacket 13.

' i A throttle 43 comprises a hollow cylindrical'body 44 formed with a flange 45 on the upper end thereof to which the intake manifold- (not shown) is secured. A conduit 46 is secured to the chamber 12 and communicates therewith. This conduit extends to and is secured to the throttle 43, and a slotted opening 47 opens into said throttle, whereby the liquid fuel vapor is fed to the throttle. A port 48 admits air to the throttle. An inverted cup 49 is slidably mounted in the body 44 and is adapted to open the ports 47 and 48 wheirmanually actuated through a lever, (not shown) attached to the arm 50. r spring 51 engages the cup 49 to urge it upwardly into closed position against the stops 52. The pipe 7 extends into the conduit and a nozzle 53 on the end thereof opens into the slot 47 to feed liquid fuel directly to the manifold when first starting the engine. The port. 10 in the bolt 8 is brought into registry with the end of the pipe 7 thus directing liquid fuel through said pipe until the engine has started and the chamber has become heated by the exhaust gases in the jacket 13 and particularly the bottom of said chamber.

Thebolt 8 is then regulated so that the liquid fuel flows through the pipe 6 into the valve 25, thence through the pipe 28 to the receptacle 17, where the liquid fuel is heated and vaporized, and the vapor pressure in the re ceptacle causes some liquid particles to be forcibly ejected past the valve 21 against the baflle 40. The vapor formed from the liquid fuel in receptacle 17 passes into the chamber 12 and will build up a pressure until the sylphon 30 is caused to expand and close the needle valve 37. When the engine has again used a part of the liquid fuel vapor the pressure in the chamber 12 will lower; causing the svlphon 30 to collapse and open the needle valve 37 so that the liquid fuel again flows to the receptacle 17. When not in operation the cup 49 closes the conduit 46 so that the liquid wheel 55 andthe suction intake to drive said wheel. 7

Having descrlbed my invention 1 cla1m 1. Aliquid fuel vaporizer, compr sing a float chamber, a liquid fuel vapor chamber, a

liquid fuel receptacle on the bottom of, said vaporchamber and having an opening therein, a jacket surrounding said vapor chamber in which hot exhaust gases are adapted to circulate, a liquid fuel pipe connecting said receptacle and said float chamber, and valve means in said liquid fuel receptacle controlling the opening from said receptacle into said liquid fuel vapor chamber, a sylphon connected to said vapor chamber, a second valve means in said pipe, and a control rod extending from said. sylphon to said second valve means, whereby the second valve means is actuated. V

2. A liquid fuel vaporizer,comprising a float chamber, a-liquid fuelvapor chamber, a fuel receptacle on the bottom of said chamber, a fuel pipe rising from said liquid fuel receptacle and opening into said vapor chamber, automatic valve means in said liquid fuel pipe whereby the flow to the vapor chamber is controlled, a jacket surrounding said vapor chamber in which hot exhaust gases are adapted to circulate and extendingadjacent said liquid fuel receptacle, a baffle plate in said vapor chamber in line with said liquid fuel pipe, a feed linev connecting said liquid fuel receptacle and the float chamber, a valve in said feed line, a sylphon connected to said vapor chamber, a rod connecting said sylphon and the last named 'valve, a. conduit extending from the vapor chamber, and a throttle inthe conduit.

3.41 liquid fuel vaporizer, comprising a float chamber, a liquid fuel vapor chamber, a liquid fuel receptacle opening into said vapor chamber, means adapted to heat said liquid fuel receptacle, a liquid fuel pipe extending from said float chamber to said liquid fuel receptacle, valve means interposed in said pipe, pressure controlled means connected to said liquid fuel vapor chamber, means operatively connecting said valve means and said pressure controlled means, a conduit extending from said vapor chamber. throttle means in said conduit, a second liquid fuel pipe extending from said float chamber to said c'on duit, and means selectively adapted to direct liquid fuel through said first named pipe or said second named pipe.

4:. A liquid fuel vaporizer, comprising a float chamber, a liquid fuel vapor chamber, a liquid fuel receptacle on the bottom of said vapor chamber and having an opening therein, a jacket surrounding said vapor chamber in which hot exhaust gases are adapted to circulate, a liquid fuel pipe connecting said receptacle and said float chamber, and valve means in said liquid fuel receptacle controlling the opening from said receptacle into said vapor chamber, a sylphon connected to said vaporizing chamber, a second valve means in said fuel pipe and a control rod extending from said sylphon to said second valve means, a conduit extending from said vapor chamber, a throttle in said conduit, a second liquid fuel pipe extending from said float chamber to said conduit and a valve adapted to direct liquid fuel to said first named liquid fuel pipe or said second named liquid fuel pipe.

In' testimony whereof I aflix my signature.

MURRICE T. BRYAN. 

